package com.itheima.service.impl;

import com.alibaba.dubbo.config.annotation.Service;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.itheima.dao.PermissionDao;
import com.itheima.dao.RoleDao;
import com.itheima.dao.UserDao;
import com.itheima.entity.PageResult;
import com.itheima.entity.QueryPageBean;
import com.itheima.pojo.Permission;
import com.itheima.pojo.Role;
import com.itheima.pojo.User;
import com.itheima.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.transaction.annotation.Transactional;

import java.util.*;

/**
 * 用户服务
 */
@Service(interfaceClass = UserService.class)
@Transactional
public class UserServiceImpl implements UserService {
    @Autowired
    private UserDao userDao;
    @Autowired
    private RoleDao roleDao;
    @Autowired
    private PermissionDao permissionDao;



  //根据用户名查询用户信息,包括用户的角色和角色关联的权限
    public User findByUsername(String username) {
        User user = userDao.findByUsername(username);//根据用户名查询用户表
        if (user == null) {
            return null;
        }
        Integer userId = user.getId();
        //根据用户id查询关联的角色
        Set<Role> roles = roleDao.findByUserId(userId);
        if (roles != null && roles.size() > 0) {
            //遍历角色集合，查询每个角色关联的权限
            for (Role role : roles) {
                Integer roleId = role.getId();//获得角色id
                //根据角色id查询关联的权限
                Set<Permission> permissions = permissionDao.findByRoleId(roleId);
                Set<Permission> using = new HashSet<>();
                if (permissions != null && permissions.size() > 0) {
                    for (Permission permission : permissions) {
                        if (permission.getStatus().equals("1")){
                            using.add(permission);
                        }
                    }
                    //角色关联权限集合
                    role.setPermissions(using);
                }
            }
            //用户关联角色集合
            user.setRoles(roles);
        }

        return user;
    }

    //新增用户
    public void add(User user, Integer[] roleIds) {
  /*    user.setPassword(new BCryptPasswordEncoder().encode(user.getPassword()));*/

        userDao.add(user);
        Integer id = user.getId();//获取用户id 用于建立用户和角色之间多对多关系
        if (roleIds != null && roleIds.length > 0) {
            for (Integer roleId : roleIds) {
                Map<String, Object> map = new HashMap<>();
                map.put("userId", id);
                map.put("roleId", roleId);
                userDao.setUserAndRole(map);
            }
        }
    }

    //根据id查询对应的用户
    public User findById(Integer id) {
        User byId = userDao.findById(id);
        String password = byId.getPassword();

        return byId;
    }

    //分页查询所有用户
    public PageResult findPage(QueryPageBean queryPageBean) {
        String queryString = queryPageBean.getQueryString();
        Integer currentPage = queryPageBean.getCurrentPage();
        Integer pageSize = queryPageBean.getPageSize();
        PageHelper.startPage(currentPage, pageSize);
        Page<User> page = userDao.findPage(queryString);
        long total = page.getTotal();
        List<User> result = page.getResult();
        return new PageResult(total, result);
    }

    //编辑用户信息
    public void edit(User user, Integer[] roleIds) {
        //基本信息修改
        userDao.edit(user);
        Integer id = user.getId();
        //删除第三张表中对应的关系
        userDao.deleteUserIdAndRoleId(id);
        //重新设置关联关系
        if (roleIds != null && roleIds.length > 0) {
            for (Integer roleId : roleIds) {
                Map<String, Object> map = new HashMap<>();
                map.put("userId", id);
                map.put("roleId", roleId);
                userDao.setUserAndRole(map);
            }
        }
    }

    //删除用户
    public void deleteById(Integer userId) {
        //删除第三张表中的对应关系
        userDao.deleteUserIdAndRoleId(userId);
        userDao.deleteUserById(userId);

    }

    @Override
    public List<User> findHealthManagers() {
        return userDao.findHealthManagers();
    }

}
